Intel 80L186EA Computer Hardware User Manual

80C186EA/80C188EA AND 80L186EA/80L188EA

16-BIT HIGH-INTEGRATION EMBEDDED PROCESSORS

80C186 Upgrade for Power Critical Applications

Fully Static Operation

True CMOS Inputs and Outputs

Integrated Feature Set

Static 186 CPU Core

Power Save, Idle and Powerdown

Clock Generator

2 Independent DMA Channels

3 Programmable 16-Bit Timers

Dynamic RAM Refresh Control Unit

Programmable Memory and

Peripheral Chip Select Logic

Programmable Wait State Generator

Local Bus Controller

System-Level Testing Support

(High Impedance Test Mode)

Speed Versions Available (3V):

13 MHz (80L186EA13/80L188EA13)

8 MHz (80L186EA8/80L188EA8)

Direct Addressing Capability to

1 Mbyte Memory and 64 Kbyte I/O

Supports 80C187 Numeric Coprocessor

Interface (80C186EA only)

Available in the Following Packages:

68-Pin Plastic Leaded Chip Carrier

80-Pin EIAJ Quad Flat Pack (QFP)

80-Pin Shrink Quad Flat Pack (SQFP)

Available in Extended Temperature

Range ( b 40 C to a 85 C)

Speed Versions Available (5V):

25 MHz (80C186EA25/80C188EA25)

20 MHz (80C186EA20/80C188EA20)

13 MHz (80C186EA13/80C188EA13)

The 80C186EA is a CHMOS high integration embedded microprocessor. The 80C186EA includes all of the features of an Enhanced Mode 80C186 while adding the additional capabilities of Idle and Powerdown

Modes. In Numerics Mode, the 80C186EA interfaces directly with an 80C187 Numerics Coprocessor.

272432 1

*Other brands and names are the property of their respective owners.

Information in this document is provided in connection with Intel products. Intel assumes no liability whatsoever, including infringement of any patent or copyright, for sale and use of Intel products except as provided in Intels Terms and Conditions of Sale for such products. Intel retains the right to make changes to these specifications at any time, without notice. Microcomputer Products may have minor variations to this specification known as errata.

October 1995

COPYRIGHT INTEL CORPORATION, 1995

Order Number: 272432-003

80C186EA/80C188EA, 80L186EA/80L188EA

80C186EA/80C188EA AND 80L186EA/80L188EA

16-Bit High Integration Embedded Processor

INTRODUCTION 4

80C186EA CORE ARCHITECTURE 4

Bus Interface Unit 4

Clock Generator 4

80C186EA PERIPHERAL

ARCHITECTURE 5

Interrupt Control Unit 5

Timer/Counter Unit 5

DMA Control Unit 7

Chip-Select Unit 7

Refresh Control Unit 7

Power Management 7

80C187 Interface (80C186EA Only) 8

ONCE Test Mode 8

DIFFERENCES BETWEEN THE

80C186XL AND THE 80C186EA 8

Pinout Compatibility 8

Operating Modes 8

TTL vs CMOS Inputs 8

Timing Specifications 8

PACKAGE INFORMATION 9

Prefix Identification